[INFO] fetching crate lcrs 0.1.1...
[INFO] checking lcrs-0.1.1 against try#163937523761cc0def32f1ba9ed63fdf65ad3478 for pr-156749
[INFO] extracting crate lcrs 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate lcrs 0.1.1
[INFO] finished tweaking crates.io crate lcrs 0.1.1
[INFO] tweaked toml for crates.io crate lcrs 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lcrs 0.1.1 on toolchain 163937523761cc0def32f1ba9ed63fdf65ad3478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lcrs 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5
[INFO] running `Command { std: "docker" "start" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking lcrs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/ulc.rs:183:26
[INFO] [stdout]     |
[INFO] [stdout] 183 |             Expr::Lam(f, box Expr::Lam(x, apps)) => {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/ulc.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION
[INFO] [stdout]   = note: superseded by `deref_patterns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/ulc.rs:183:26
[INFO] [stdout]     |
[INFO] [stdout] 183 |             Expr::Lam(f, box Expr::Lam(x, apps)) => {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/ulc.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION
[INFO] [stdout]   = note: superseded by `deref_patterns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `x` in this scope
[INFO] [stdout]    --> src/ulc.rs:184:32
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 if f == "f" && x == "x" {
[INFO] [stdout]     |                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 184 -                 if f == "f" && x == "x" {
[INFO] [stdout] 184 +                 if f == "f" && f == "x" {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `apps` in this scope
[INFO] [stdout]    --> src/ulc.rs:185:34
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let appvec = apps.to_app_vec();
[INFO] [stdout]     |                                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `x` in this scope
[INFO] [stdout]    --> src/ulc.rs:184:32
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 if f == "f" && x == "x" {
[INFO] [stdout]     |                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 184 -                 if f == "f" && x == "x" {
[INFO] [stdout] 184 +                 if f == "f" && f == "x" {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `apps` in this scope
[INFO] [stdout]    --> src/ulc.rs:185:34
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let appvec = apps.to_app_vec();
[INFO] [stdout]     |                                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lcrs` (bin "ulc") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0425, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lcrs` (bin "ulc" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5", kill_on_drop: false }`
[INFO] [stdout] e465ebc767689f2ded1d0a1bbff7fee64b03aaf928ad73116778c95bcab759b5